शमो दमस्तप: शौचं क्षान्तिरार्जवमेव च ।
ज्ञानं विज्ञानमास्तिक्यं ब्रह्मकर्म स्वभावजम् ॥

śamo damas-tapa: śaucaṃ kṣāntirārjavam-eva ca
jñānaṃ vijñānam-āstikyaṃ brahma-karma svabhāvajam – 42

Mental discipline, sensory control, austerity, purity, forbearance, straightforwardness, knowledge, realization of the knowledge, and unflinching faith in the spiritual truth – these constitute the natural activities of a brāhmaṇa.